ASTM C1137-97

Standard Test Method for Degradation of Fine Aggregate Due to Attrition

SCOPE
1.1 This test method provides a procedure for indicating the degree to which a fine aggregate may be subject to degradation due to the mixing and agitation of portland cement concrete.
1.2 Units of Measurement -With regard to sieve sizes and size of aggregate as determined by the use of testing sieves, the values in inch-pound units are shown for the convenience of the user, but the standard sieve designation shown in parentheses is the standard value as stated in Specification E11.
1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Aug-1997
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.20 - Aggregates

Relations

• Replaced By: ASTM C1137-05 - Standard Test Method for Degradation of Fine Aggregate Due to Attrition (Withdrawn 2011)
• Effective Date: 15-Jul-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1137–97
Standard Test Method for
Degradation of FineAggregate Due toAttrition
This standard is issued under the fixed designation C 1137; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope a high-speed impeller. Degradation is measured by the de-
crease in fineness modulus (as defined in Definitions C 125)
1.1 This test method provides a procedure for indicating the
and the increase in amount of materials finer than the 75-µm
degree to which a fine aggregate may be subject to degradation
(No. 200) sieve.
due to the mixing and agitation of portland cement concrete.
1.2 The values given in SI units are to be regarded as the
4. Significance and Use
standard. The values given in parentheses are for information
4.1 The tendency of some fine aggregates to degrade from
only.
thegrindingactioninaconcretemixermayaffectmixingwater
1.3 This standard does not purport to address all of the
demand, entrained air, and slump. Such aggregates may com-
safety concerns, if any, associated with its use. It is the
ply with the requirements of Specification C 33. When it is
responsibility of the user of this standard to establish appro-
suspected that degradation during mixing is a problem, this test
priate safety and health practices and determine the applica-
method may be useful in evaluating the extent of the problem.
bility of regulatory limitations prior to use.
4.2 This test method may be used for preliminary screening
2. Referenced Documents to indicate the need for further evaluation through petrographic
examination (Practice C 295) or testing the quality of mortar
2.1 ASTM Standards:
made from the fine aggregate in question.
C 33 Specification for Concrete Aggregates
4.3 This test method may be of considerable value in
C 117 Test Method for Materials Finer Than 75-µm (No.
comparing the results obtained with unknown materials against
200) Sieve in Mineral Aggregates by Washing
those with materials of known performance in concrete.
C 125 Terminology Relating to Concrete and Concrete
Aggregates
5. Apparatus
C 136 Test Method for Sieve Analysis of Fine and Coarse
2 5.1 Sieves, conforming to Specification E 11: 75-µm (No.
Aggregates
200), 150-µm (No. 100), 300-µm (No. 50), 600-µm (No. 30),
C 295 Guide for Petrographic Examination of Aggregates
2 1.18-mm (No. 16), 2.36-mm (No. 8), 4.75-mm (No. 4), and
for Concrete
9.5-mm ( ⁄8-in.).
C 702 Practice for Reducing Field Samples ofAggregate to
2 5.2 Balance—A balance or scale readable and accurate to
Testing Size
0.1 g or 0.1 % of the test load, whichever is greater, at any
C 1005 Specification for Reference Masses and Devices for
point within the range of use.
Determining Mass for Use in the Physical Testing of
3 5.3 Oven—An oven of appropriate size capable of main-
Hydraulic Cements
4 taining a uniform temperature of 110 6 5°C (230 6 9°F).
D 75 Practice for Sampling Aggregates
5.4 Attrition Device—A stainless steel octagonal tank, 140
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
1 1
5 mm(5 ⁄2in.)highand110mm(4 ⁄2in.)minimuminsidewidth,
poses
with a motor-driven 19-mm ( ⁄4-in.) vertical shaft so mounted
3. Summary of Test Method that it can be lowered into the desired position within the
octagonal tank. Mounted on the shaft there shall be three
3.1 A sample of fine aggregate, of specified grading, is
horizontal sets of six pitched stainless steel blades and the
subjected to vigorous agitation under water from the action of
shaft and blades shall rotate at approximately 850 r/min when
in operation. A lid shall be provided with a hole for the shaft.
ThistestmethodisunderthejurisdictionofASTMCommitteeC-9onConcrete
See Figs. 1 and 2.
andConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.20on
Normal Weight Aggregates.
Current edition approved Aug. 10, 1997. Published June 1998. Originally
published as C 1137 – 90. Last previous edition C 1137 – 90. Available from WEMCO, Minerals Products Division, 1796 Tribute Rd., P.O.
Annual Book of ASTM Standards, Vol 04.02. Box15619,Sacramento,CA95852(916-929-9363).A ⁄2-in.attritiontankwith4-in.
Annual Book of ASTM Standards, Vol 04.01. attriting element (impeller) that can be used in a 850-r/min drill press or in a
Annual Book of ASTM Standards, Vol 04.03. WEMCO laboratory floatation machine are mentioned in Bulletin No. F7, B2,
Annual Book of ASTM Standards, Vol 14.02. September 1982, parts No. 23828 (impeller), 23844 (tank), and 44519 (cover).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C1137
FIG. 1Attrition Machine
in Fig. 1. It shall be capable of driving the impeller at
approximately850r/minwiththesampleandwaterinthetank.
6. Sample Preparation
6.1 Sample the aggregate in accordance with Practice D 75
and reduce to test portion size in accordance with Practice
C 702.
6.2 Prepare at least two test portions of 500 6 5 g each
...